President Joe Biden warned Russian President Vladimir Putin Saturday that the United States will “respond decisively and impose swift and severe costs” should Russia invade Ukraine. The warning comes as U.S. officials say a Russian invasion could begin

With an escalated Russian military buildup on the borders of Ukraine, Mr. Biden emphasized on a phone call with Putin that an invasion “would produce widespread human suffering and diminish Russia’s standing.”

“President Biden was clear with President Putin that while the United States remains prepared to engage in diplomacy, in full coordination with our Allies and partners, we are equally prepared for other scenarios,

The Biden administration has urged American citizens to leave Ukraine and on Saturday, the U.S. Department of State ordered non-emergency employees at the U.S. embassy in Kyiv to leave the country.

“Today, the [State Department] ordered non-emergency U.S. employees at the Embassy to depart due to continued reports of a Russian military build-up on the border with Ukraine, indicating potential for significant military action,